CN103700565B - A kind of Automatic ion source electrical parameter quality discrimination correction device and method - Google Patents
A kind of Automatic ion source electrical parameter quality discrimination correction device and method Download PDFInfo
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- CN103700565B CN103700565B CN201310752246.XA CN201310752246A CN103700565B CN 103700565 B CN103700565 B CN 103700565B CN 201310752246 A CN201310752246 A CN 201310752246A CN 103700565 B CN103700565 B CN 103700565B
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Abstract
The invention belongs to isotope mass spectrometry instrument in analytical tool and manufacture field, be specifically related to a kind of Automatic ion source electrical parameter quality discrimination correction device and method.Purpose is for different mass numbers, the electrical quantity group that design matches, thus ensures that each mass number ion-sensitive degree maximizes.This device includes multiple potentiometer group, often group potentiometer is made up of the potentiometer that multiple independences are identical, each potentiometer is in parallel, two ends are connected on electrode on the voltage output end that bleeder circuit plate is corresponding, each potentiometer sliding end is connected on electrode by corresponding high-voltage relay, the connection of high-voltage relay is controlled by mass number judge module, and during work, often group potentiometer only one of which can connect output by high-voltage relay.This device energy mass discrimination that correction mass number difference is brought automatically, especially when carrying out little mass number abundance measurement, effect is obvious.
Description
Technical field
The invention belongs to isotope mass spectrometry instrument in analytical tool and manufacture field, be specifically related to a kind of ion source
Electrical quantity quality discriminates against automatic correction device and method.
Background technology
The mass analyzer of magnetic mass spectrometer device is to be operated according to electromagnetic principle, it is therefore necessary to have
Molecule is become the ion source of charged ion.Ion source not only determines the probability of mass spectral analysis, and
Sensitivity, resolving power, precision and accuracy main performance index with mass spectrometer have the closeest
The relation cut.The ionogenic principle of electron-bombardment-type is: cathode filament is red-hot by big electric current in fine vacuum,
Under the effect of electric field, electrons escapes out from cathode surface, and auxiliary magnetic field can make trajectory of electron motion become
Spiral linear, increases the collision probability of electronics and neutral molecule.The ion that electron-bombardment-type ion source produces
Power dissipation is little, and sample consumption is few, and ion beam current is more stable, and detection sensitivity is high.Ionization produces
First ion is brought out pole and pulls out from ionization chamber, in turnover electrostatic lenses, through shielding, focusing on,
Deflecting action, then enter analysis track through exit slit.Therefore ion source has the effect of two aspects: will
Analyzed sample ionization becomes ion；Form the ion beam with certain energy and geometry.Ion source
Electrostatic lenses are similar to optical lens, and it is made up of multi-group electrode, apply different electricity on electrode
Pressure, forms electrostatic field, and the ion passed through is played focus deflection effect by electrostatic field.Different quality number difference electricity
The ion focusing deflecting action of lotus is different, and sensitivity difference is big.Mass number differs the biggest, charge number phase
Difference is the biggest, and the electrical quantity difference on each electrode is the biggest, and therefore ion source electrical quantity is to different quality number or electricity
There is mass discrimination in the ion of lotus number.Especially when low quality number isotopic abundance measurement, quality discrimination
The most obvious depending on phenomenon.
Summary of the invention
It is an object of the invention to provide a kind of Automatic ion source electrical parameter quality discrimination correction device and method,
For different mass numbers, the electrical quantity group that design matches, thus ensure each mass number ion-sensitive
Degree maximizes.
The technical solution adopted in the present invention is:
A kind of Automatic ion source electrical parameter quality discrimination correction device, including multiple potentiometer groups, often organizes electricity
Being made up of the potentiometer that multiple independences are identical in the device of position, each potentiometer is in parallel, and two ends are connected on electrode in dividing potential drop
On the voltage output end that device circuit board is corresponding, each potentiometer sliding end is connected on electricity by corresponding high-voltage relay
Extremely going up, the connection of high-voltage relay is controlled by mass number judge module, and during work, often group potentiometer is only
One energy connects output by high-voltage relay.
A kind of Automatic ion source electrical parameter quality discrimination correction device as above, wherein: described often group
Potentiometer has 6 independent potentiometers, the most corresponding different mass number.
A kind of Automatic ion source electrical parameter quality discrimination correction device as above, wherein: described current potential
Device group totally three, the most corresponding extraction electrode, the first focusing electrode and the second focusing electrode.
A kind of ion source electrical quantity quality discriminates against auto-correction method, comprises the steps:
Step S1: 6 potentiometers, respectively potentiometers in parallel on the potentiometer of ion source extraction electrode
W2-Y, potentiometer W3-Y, potentiometer W4-Y, potentiometer W5-Y, potentiometer W6-Y, potentiometer WM-Y；
Step S2: 6 potentiometers in parallel on the potentiometer of ion source the first focusing electrode, is respectively electricity
Position device W2-J1, potentiometer W3-J1, potentiometer W4-J1, potentiometer W5-J1, potentiometer W6-J1,
Potentiometer WM-J1；
Step S3: 6 potentiometers in parallel on the potentiometer of ion source the second focusing electrode, is respectively electricity
Position device W2-J2, potentiometer W3-J2, potentiometer W4-J2, potentiometer W5-J2, potentiometer W6-J1,
Potentiometer WM-J2；
Step S4: the sliding end of each potentiometer is connected with electrode by a high-voltage relay, potentiometer
W2-Y, potentiometer W3-Y, potentiometer W4-Y, potentiometer W5-Y, potentiometer W6-Y, potentiometer WM-Y
Continued by high-voltage relay KM2-Y, high-voltage relay KM3-Y, high-voltage relay KM4-Y, high pressure respectively
Electrical equipment KM5-Y, high-voltage relay KM6-Y, high-voltage relay KM-Y are connected with extraction electrode；
Potentiometer W2-J1, potentiometer W3-J1, potentiometer W4-J1, potentiometer W5-J1, potentiometer W6-J1,
Potentiometer WM-J1 is respectively by high-voltage relay KM2-J1, high-voltage relay KM3-J1, high-voltage relay
KM4-J1, high-voltage relay KM5-J1, high-voltage relay KM6-J1, high-voltage relay KM-J1 and first
Focusing electrode is connected；
Potentiometer W2-J2, potentiometer W3-J2, potentiometer W4-J2, potentiometer W5-J2, potentiometer W6-J2,
Potentiometer WM-J2 is respectively by high-voltage relay KM2-J2, high-voltage relay KM3-J2, high-voltage relay
KM4-J2, high-voltage relay KM5-J2, high-voltage relay KM6-J2, high-voltage relay KM-J2 and second
Focusing electrode is connected；
Step S5: when mass number is less than 2.5, mass number judge module control high-voltage relay KM2-Y,
KM2-J1, KM2-J2 connect, and corresponding potentiometer W2-Y, W2-J1, W2-J2 exports corresponding current potential and arrive
Extraction electrode, the first focusing electrode and the second focusing electrode；
When mass number is more than 2.5 but is less than 3.5, mass number judge module control high-voltage relay KM3-Y,
KM3-J1, KM3-J2 connect, and corresponding potentiometer W3-Y, W3-J1, W3-J2 exports corresponding current potential and arrive
Extraction electrode, the first focusing electrode and the second focusing electrode；
When mass number is more than 3.5 but is less than 4.5, mass number judge module control high-voltage relay KM4-Y,
KM4-J1, KM4-J2 connect, and corresponding potentiometer W4-Y, W4-J1, W4-J2 exports corresponding current potential and arrive
Extraction electrode, the first focusing electrode and the second focusing electrode；
When mass number is more than 4.5 but is less than 5.5, mass number judge module control high-voltage relay KM5-Y,
KM5-J1, KM5-J2 connect, and corresponding potentiometer W5-Y, W5-J1, W5-J2 exports corresponding current potential and arrive
Extraction electrode, the first focusing electrode and the second focusing electrode；
When mass number is more than 5.5 but is less than 6.5, mass number judge module control high-voltage relay KM6-Y,
KM6-J1, KM6-J2 connect, and corresponding potentiometer W6-Y, W6-J1, W6-J2 exports corresponding current potential and arrive
Extraction electrode, the first focusing electrode and the second focusing electrode；
When mass number more than 6.5 time, mass number judge module control high-voltage relay KM-Y, KM-J1,
KM-J2 connects, corresponding potentiometer WM-Y, WM-J1, WM-J2 corresponding current potential of output to extraction electrode,
First focusing electrode and the second focusing electrode.
A kind of ion source electrical quantity quality as above discriminates against auto-correction method, wherein: in described step
Before rapid S1, also include the slide plate regulating each potentiometer, make the peak shape of quasi-molecular ions reach most preferably, peak reaches by force
Maximum step.
The invention has the beneficial effects as follows:
Potentiometer devises a kind of Automatic ion source electrical parameter quality discrimination correction device, solves matter
Amount number is different, the problem that electrode electrical quantity is different.
A kind of Automatic ion source electrical parameter quality discrimination correction device that the present invention provides can automatic correction mass
The mass discrimination that number difference is brought, especially when carrying out little mass number abundance measurement, effect is obvious.
Accompanying drawing explanation
The structure of a kind of Automatic ion source electrical parameter quality discrimination correction device that Fig. 1 provides for the present invention
Figure.
Detailed description of the invention
A kind of ion source electrical quantity quality provided the present invention with embodiment below in conjunction with the accompanying drawings is discriminated against automatically
Correcting unit is introduced with method:
A kind of Automatic ion source electrical parameter quality discrimination correction device, including multiple potentiometer groups, often organizes electricity
Being made up of the potentiometer that multiple independences are identical in the device of position, each potentiometer is in parallel, and two ends are connected on electrode in dividing potential drop
On the voltage output end that device circuit board is corresponding, each potentiometer sliding end is connected on electricity by corresponding high-voltage relay
Extremely going up, the connection of high-voltage relay is controlled by mass number judge module, and during work, often group potentiometer is only
One energy connects output by high-voltage relay.
For obtaining more preferable effect, each several part is preferably as follows:
Often group potentiometer in have 6 independent potentiometers, be respectively used to mass number be M2, M3, M4, M5,
M6 and the regulation of the electrical quantity more than M6.
The ionogenic electrostatic lenses at this correcting unit place include the extraction electrode of lamellar, screen successively
Cover electrode, focusing electrode, acceleration electrode, slit sheet and simple lens；Wherein focusing electrode is left and right two halves
Structure, be expressed as the first focusing electrode and the second focusing electrode；The potentiometer group of this correcting unit totally three
Individual, the most corresponding extraction electrode, the first focusing electrode and the second focusing electrode.
Before using magnetic mass spectrometer device, the slide plate of each potentiometer need to be regulated, make the peak shape of quasi-molecular ions reach
Good, peak reaches by force maximum；When specifically measuring, can as it is shown in figure 1, when mass number less than 2.5 time, matter
Amount number judge module controls high-voltage relay KM2-Y, KM2-J1, KM2-J2 and connects, corresponding potentiometer
W2-Y, W2-J1, W2-J2 export corresponding current potential and focus on electricity to extraction electrode, the first focusing electrode and second
Pole.
When mass number is more than 2.5 but is less than 3.5, mass number judge module control high-voltage relay KM3-Y,
KM3-J1, KM3-J2 connect, and corresponding potentiometer W3-Y, W3-J1, W3-J2 exports corresponding current potential and arrive
Extraction electrode, the first focusing electrode and the second focusing electrode.
When mass number is more than 3.5 but is less than 4.5, mass number judge module control high-voltage relay KM4-Y,
KM4-J1, KM4-J2 connect, and corresponding potentiometer W4-Y, W4-J1, W4-J2 exports corresponding current potential and arrive
Extraction electrode, the first focusing electrode and the second focusing electrode.
When mass number is more than 4.5 but is less than 5.5, mass number judge module control high-voltage relay KM5-Y,
KM5-J1, KM5-J2 connect, and corresponding potentiometer W5-Y, W5-J1, W5-J2 exports corresponding current potential and arrive
Extraction electrode, the first focusing electrode and the second focusing electrode.
When mass number is more than 5.5 but is less than 6.5, mass number judge module control high-voltage relay KM6-Y,
KM6-J1, KM6-J2 connect, and corresponding potentiometer W6-Y, W6-J1, W6-J2 exports corresponding current potential and arrive
Extraction electrode, the first focusing electrode and the second focusing electrode.
When mass number more than 6.5 time, mass number judge module control high-voltage relay KM-Y, KM-J1,
KM-J2 connects, corresponding potentiometer WM-Y, WM-J1, WM-J2 corresponding current potential of output to extraction electrode,
First focusing electrode and the second focusing electrode.
By utilizing the present invention, the impact of mass discrimination can be eliminated to greatest extent.
During test, applying the present invention to BFQT-7 type mass spectrograph (Rm=25cm), to carry out hydrogen isotope rich
During degree is analyzed, each electrical quantity group can quick and precisely switch, it is ensured that the sensitivity of each ion.
Claims (4)
1. an Automatic ion source electrical parameter quality discrimination correction device, it is characterised in that: include multiple current potential
Device group, is often made up of the potentiometer that multiple independences are identical in group potentiometer, and each potentiometer is in parallel, and two ends are connected on
Electrode is on the voltage output end that bleeder circuit plate is corresponding, and each potentiometer sliding end passes through corresponding high-voltage relay
Device is connected on electrode, and the connection of high-voltage relay is controlled by mass number judge module, during work, often organizes current potential
Device only one of which can connect output by high-voltage relay.
A kind of Automatic ion source electrical parameter quality discrimination correction device the most according to claim 1, it is special
Levy and be: described often group potentiometer has 6 independent potentiometers, the most corresponding different mass number.
A kind of Automatic ion source electrical parameter quality discrimination correction device the most according to claim 1, it is special
Levying and be: described potentiometer group totally three, the most corresponding extraction electrode, the first focusing electrode and second focus on
Electrode.
4. ion source electrical quantity quality discriminates against an auto-correction method, comprises the steps:
Step S1: 6 potentiometers, respectively potentiometers in parallel on the potentiometer of ion source extraction electrode
W2-Y, potentiometer W3-Y, potentiometer W4-Y, potentiometer W5-Y, potentiometer W6-Y, potentiometer WM-Y；
Step S2: 6 potentiometers, respectively potentiometers in parallel on the potentiometer of ion source the first focusing electrode
W2-J1, potentiometer W3-J1, potentiometer W4-J1, potentiometer W5-J1, potentiometer W6-J1, potentiometer WM-J1；
Step S3: 6 potentiometers, respectively potentiometers in parallel on the potentiometer of ion source the second focusing electrode
W2-J2, potentiometer W3-J2, potentiometer W4-J2, potentiometer W5-J2, potentiometer W6-J1, potentiometer WM-J2；
Step S4: the sliding end of each potentiometer is connected with electrode by a high-voltage relay, potentiometer W2-Y,
Potentiometer W3-Y, potentiometer W4-Y, potentiometer W5-Y, potentiometer W6-Y, potentiometer WM-Y pass through respectively
High-voltage relay KM2-Y, high-voltage relay KM3-Y, high-voltage relay KM4-Y, high-voltage relay KM5-Y,
High-voltage relay KM6-Y, high-voltage relay KM-Y are connected with extraction electrode；
Potentiometer W2-J1, potentiometer W3-J1, potentiometer W4-J1, potentiometer W5-J1, potentiometer W6-J1,
Potentiometer WM-J1 is respectively by high-voltage relay KM2-J1, high-voltage relay KM3-J1, high-voltage relay
KM4-J1, high-voltage relay KM5-J1, high-voltage relay KM6-J1, high-voltage relay KM-J1 and first are poly-
Burnt electrode is connected；
Potentiometer W2-J2, potentiometer W3-J2, potentiometer W4-J2, potentiometer W5-J2, potentiometer W6-J2,
Potentiometer WM-J2 is respectively by high-voltage relay KM2-J2, high-voltage relay KM3-J2, high-voltage relay
KM4-J2, high-voltage relay KM5-J2, high-voltage relay KM6-J2, high-voltage relay KM-J2 and second are poly-
Burnt electrode is connected；
Step S5: when mass number is less than 2.5, mass number judge module control high-voltage relay KM2-Y,
KM2-J1, KM2-J2 connect, and corresponding potentiometer W2-Y, W2-J1, W2-J2 exports corresponding current potential to drawing
Electrode, the first focusing electrode and the second focusing electrode；
When mass number is more than 2.5 but is less than 3.5, mass number judge module control high-voltage relay KM3-Y,
KM3-J1, KM3-J2 connect, and corresponding potentiometer W3-Y, W3-J1, W3-J2 exports corresponding current potential to drawing
Electrode, the first focusing electrode and the second focusing electrode；
When mass number is more than 3.5 but is less than 4.5, mass number judge module control high-voltage relay KM4-Y,
KM4-J1, KM4-J2 connect, and corresponding potentiometer W4-Y, W4-J1, W4-J2 exports corresponding current potential to drawing
Electrode, the first focusing electrode and the second focusing electrode；
When mass number is more than 4.5 but is less than 5.5, mass number judge module control high-voltage relay KM5-Y,
KM5-J1, KM5-J2 connect, and corresponding potentiometer W5-Y, W5-J1, W5-J2 exports corresponding current potential to drawing
Electrode, the first focusing electrode and the second focusing electrode；
When mass number is more than 5.5 but is less than 6.5, mass number judge module control high-voltage relay KM6-Y,
KM6-J1, KM6-J2 connect, and corresponding potentiometer W6-Y, W6-J1, W6-J2 exports corresponding current potential to drawing
Electrode, the first focusing electrode and the second focusing electrode；
When mass number is more than 6.5, mass number judge module controls high-voltage relay KM-Y, KM-J1, KM-J2
Connecting, corresponding potentiometer WM-Y, WM-J1, WM-J2 exports corresponding current potential to extraction electrode, the first focusing
Electrode and the second focusing electrode.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05182632A (en) * | 1991-12-26 | 1993-07-23 | Yokogawa Electric Corp | Secondary electron multiplier |
| CN2618568Y (en) * | 2003-05-20 | 2004-06-02 | 上海交大南洋医疗器械有限公司 | Image displacement device of stone crasher |
| EP1931020A1 (en) * | 2005-09-08 | 2008-06-11 | Shimadzu Corporation | High-voltage power supply and mass spectrometer using the same |
| CN202796850U (en) * | 2012-10-19 | 2013-03-13 | 山东省科学院海洋仪器仪表研究所 | Ion optical-lens packaging device |
| CN203733758U (en) * | 2013-12-31 | 2014-07-23 | 四川红华实业有限公司 | Automatic correction device for ion source electrical parameter quality discrimination |
-
2013
- 2013-12-31 CN CN201310752246.XA patent/CN103700565B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05182632A (en) * | 1991-12-26 | 1993-07-23 | Yokogawa Electric Corp | Secondary electron multiplier |
| CN2618568Y (en) * | 2003-05-20 | 2004-06-02 | 上海交大南洋医疗器械有限公司 | Image displacement device of stone crasher |
| EP1931020A1 (en) * | 2005-09-08 | 2008-06-11 | Shimadzu Corporation | High-voltage power supply and mass spectrometer using the same |
| CN202796850U (en) * | 2012-10-19 | 2013-03-13 | 山东省科学院海洋仪器仪表研究所 | Ion optical-lens packaging device |
| CN203733758U (en) * | 2013-12-31 | 2014-07-23 | 四川红华实业有限公司 | Automatic correction device for ion source electrical parameter quality discrimination |
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